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Excavator hydraulic system and excavator
The excavator hydraulic system comprises a main pump, an oil outlet of the main pump is connected with an oil inlet of a main valve standby control valve, the main valve standby control valve is used for driving a main machine tool to work, and the main machine tool comprises but not limited to one of a dozer blade, a rotating machine tool and an opening and closing machine tool; the gear pump operates independently from the main pump, an oil outlet of the gear pump is connected with an oil inlet of a machine tool control valve, the machine tool control valve is used for driving additional machine tools to work, and the additional machine tools comprise but not limited to at least one of a dozer blade, a rotating machine tool, an opening and closing machine tool, a hydraulic shear and a grab bucket. After two or more machines such as a dozer blade, an opening and closing machine and a rotating machine are arranged at the same time, the problems of walking deviation and walking speed reduction cannot occur due to simultaneous actions of the newly-added executing mechanism and left-right walking.
本发明公开了一种挖掘机液压系统及挖掘机，挖掘机液压系统，包括：主泵，所述主泵的出油口与主阀备用控制阀的进油口连接，所述主阀备用控制阀用于驱动主机具工作，所述主机具包括但不限于推土铲、旋转机具和开合机具中的一种；独立于主泵运行的齿轮泵，所述齿轮泵的出油口与机具控制阀的进油口连接，所述机具控制阀用于驱动附加机具工作，所述附加机具包括但不限于推土铲、旋转机具、开合机具、液压剪和抓斗中的至少一种。本发明在同时配置推土铲、开合机具、旋转机具等两个及两个以上的机具后，新增加的执行机构和左右行走同时动作不会出现行走跑偏和行走降速的问题。
Excavator hydraulic system and excavator
The excavator hydraulic system comprises a main pump, an oil outlet of the main pump is connected with an oil inlet of a main valve standby control valve, the main valve standby control valve is used for driving a main machine tool to work, and the main machine tool comprises but not limited to one of a dozer blade, a rotating machine tool and an opening and closing machine tool; the gear pump operates independently from the main pump, an oil outlet of the gear pump is connected with an oil inlet of a machine tool control valve, the machine tool control valve is used for driving additional machine tools to work, and the additional machine tools comprise but not limited to at least one of a dozer blade, a rotating machine tool, an opening and closing machine tool, a hydraulic shear and a grab bucket. After two or more machines such as a dozer blade, an opening and closing machine and a rotating machine are arranged at the same time, the problems of walking deviation and walking speed reduction cannot occur due to simultaneous actions of the newly-added executing mechanism and left-right walking.
本发明公开了一种挖掘机液压系统及挖掘机，挖掘机液压系统，包括：主泵，所述主泵的出油口与主阀备用控制阀的进油口连接，所述主阀备用控制阀用于驱动主机具工作，所述主机具包括但不限于推土铲、旋转机具和开合机具中的一种；独立于主泵运行的齿轮泵，所述齿轮泵的出油口与机具控制阀的进油口连接，所述机具控制阀用于驱动附加机具工作，所述附加机具包括但不限于推土铲、旋转机具、开合机具、液压剪和抓斗中的至少一种。本发明在同时配置推土铲、开合机具、旋转机具等两个及两个以上的机具后，新增加的执行机构和左右行走同时动作不会出现行走跑偏和行走降速的问题。
Excavator hydraulic system and excavator
一种挖掘机液压系统及挖掘机
NAN SHANGJUN (author) / JIN YUEFENG (author) / DONG YUZHONG (author) / ZHU SHUO (author) / ZHANG YANG (author) / ZHANG XINKUI (author) / LI XIAODONG (author) / LIN JISHEN (author)
2023-12-22
Patent
Electronic Resource
Chinese
IPC:
E02F
Baggern
,
DREDGING
Excavator main valve, excavator hydraulic system and excavator
| European Patent Office | 2023
| European Patent Office | 2022